The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1991
Filed:
Sep. 18, 1989
Kouji Ohno, Kanagawa, JP;
Shinichi Saito, Kanagawa, JP;
Takashi Inukai, Kanagawa, JP;
Hiromichi Inoue, Kanagawa, JP;
Kazutoshi Miyazawa, Kanagawa, JP;
Chisso Corporation, Osaka, JP;
Abstract
An optically active compound exhibiting high speed response properties when used as a component of liquid crystal materials used in a liquid crystal display mode utilizing ferroelectricity, and a liquid crystal composition containing the compound are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 represents alkyl, alkoxy or alkoxycarbonyl each of 2 to 18 C, R.sup.2 represents alkyl of 3 to 18 C or alkoxy of 1 to 18 C and A represents a member selected from a group of two directly bonded six-membered rings having a halogen atom, cyano group, methyl group or trifluoromethyl group attached thereonto and * represents an unsymmetric carbon atom.